9971637942 has 32 divisors (see below), whose sum is σ = 22870132992. Its totient is φ = 2839312224.

The previous prime is 9971637919. The next prime is 9971637979. The reversal of 9971637942 is 2497361799.

9971637942 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392848 + ... + 417459.

It is an arithmetic number, because the mean of its divisors is an integer number (714691656).

Almost surely, 2^9971637942 is an apocalyptic number.

9971637942 is an abundant number, since it is smaller than the sum of its proper divisors (12898495050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9971637942 is a wasteful number, since it uses less digits than its factorization.

9971637942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810612.

The product of its digits is 5143824, while the sum is 57.

The square root of 9971637942 is about 99858.0890163636. The cubic root of 9971637942 is about 2152.3959546698.

The spelling of 9971637942 in words is "nine billion, nine hundred seventy-one million, six hundred thirty-seven thousand, nine hundred forty-two".